Guides

Nvidia Earnings Nights: How SK Hynix and Samsung React at the Seoul Open

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Korean chip stocks can fall the morning after an Nvidia beat because the move was pre-positioned: the reaction runs through the after-hours print, guidance, overnight US futures and after-hours moves in other chip names before the 09:00 Seoul open. Here is the full transmission chain, with a worked example reading real August 2026 foreign-flow data into a purely hypothetical earnings night — heavy selling that fades to near flat, a de-risking backdrop whose post-result implications can cut more than one way.

Korean Share Buybacks: Why Cancellation, Not the Announcement, Is What Lasts

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In Korea, a buyback lowers the share count for EPS purposes the moment the repurchased shares become treasury stock — but only cancellation makes that reduction permanent. Uncancelled shares can be resold or deployed for control, so the market prices a cancellation clause very differently from a bare repurchase pledge. Here is how to read the disclosures, the trust-contract loophole, and a checklist for judging any Korean buyback announcement.

Single-Stock Leveraged ETFs in Korea: 2x Daily-Reset Decay Math

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A 2x daily-reset product does not double your holding-period return: after a +10% then -10% two-day swing, the underlying is down 1% but the 2x product is down 4%. Here is the reset mechanism, the decay math on volatile Korean names like Samsung Electronics and SK Hynix, and the FSC/KRX rules that govern these products.

Bank of Korea Base Rate: How Rate Decisions Move Korean Stocks

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The Bank of Korea Base Rate reaches Korean stocks through six channels: the won, foreign flows, valuations, bank margins, exporters, and retail leverage. As of August 2026, margin lending stood near 30.9 trillion won against 100.1 trillion won of investor deposits — here is how to read both around a rate decision.

Korea Investor Flow Data: Reading the KRX 3-Way Daily Breakdown

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KRX publishes daily net-buying figures for foreigners, institutions, and individuals on data.krx.co.kr and Naver Finance; the on-screen tables are typically labeled in millions of won, while Korean flow headlines quote units of 100 million won. The key skill: split “institutions” into pension, financial-investment, and trust money before drawing any conclusion, because each behaves differently.

Korea 10-Day Export Data: How to Read One of the Earliest Trade Signals

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Korea’s customs service publishes preliminary export data on the 1st, 11th and 21st of every month — one of the earliest official readings on global chip demand. Here is what each release contains, why working-day-adjusted daily averages beat the headline YoY number, and how Samsung Electronics and SK hynix trade the print.

KOSPI 200 Options Expiry: How Program Trading Can Move the Korean Close

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Standard monthly KOSPI 200 options expire on the second Thursday of each month and settle against the 15:20-15:30 closing auction, so some hedge- and arbitrage-linked program flows concentrate into those final ten minutes. Here is how to read the futures basis and KRX program-trade balance beforehand — and what those indicators can and cannot tell you — with a worked reading of August 2026 foreign-flow data.

Why Oil Hits the KOSPI: Korea’s ~95% Energy Import Dependence

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Korea imports roughly 95% of its energy, so an oil spike widens the trade deficit, pressures the won (which closed at 1,423.98 per dollar on August 4, 2026), feeds inflation, and triggers foreign selling on the KOSPI. Here is the full transmission chain, the sectors hit in each direction, and the exact data releases to watch.

Korea Margin Debt at 32.7 Trillion Won: Reading the Leverage Cycle

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Korean margin loans (sinyong yungja) stood at 32.67 trillion won as of July 24, 2026 — roughly 31% of the 105.6 trillion won parked in investor deposit accounts. Here is where to find both KOFIA figures, how forced liquidation (bandae maemae) actually works, and how to read the ratio before a drawdown, not after.